johnson



(No Model.)

B. BAIRD& T. 0. JOHNSON. SLIDE EOE EXTENSION TABLES.

N0.485,521. Patented Nov.1,1892.

llNrrnn STATES PATENT OFFICE.

BURR BAIRD AND THOMASO. vJOHNSON, OF NEWARK, OHIO.

SLIDE FOR EXTENSION-TABLES. Y

SPECIFICATION forming part of Letters Patent No. 485,521, dated November 1, 1892. Application filed November 10, 1891. Serial No. 411,461. (No model.)

To all whom t may concern:

Be it known that we, BURR BAIRD and THOMAS O. JOHNSON, of Newark, in the county of Licking and State of Ohio, have invented certain new and usefulImpi-ovements in Slides for Extension-Tables; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

Our invention relates to an improvement in slides for extension-tables; and it consists in certain novel features of construction and in the combination of the parts, which -will be fully described hereinafter, and particularly referred to in the claim. 1 The objectof our invention is to construct an improved stop and guide for extension-table slides which will serve to strengthen the sections by resisting the tendency thereof to warp, and which will strengthen and support the sections when extended and prevent the annoying trouble so often experienced in devices for this purpose of binding when the sections are being closed.

In the drawings, Figure 1 is a central longitudinal sectional view of an extension-table slide embodying our invention, the upper section being shown extended. Fig. 2 is an end view of the same, all the sections being closed. Fig. 3 is a detached perspective view of the supporting, guiding, and stop staple, the saine being somewhat enlarged.

A, B, and C indicate three sections of an extension-slide, which are specially intended for use in connection with extension-tables, though they may be used in any analogous connection, as will be understood. The upper section A and the lower side of the middle section B are each provided with a T- shaped guiding projection D, which projections fit in correspondingly-shaped grooves E made in the upper face of the middle section and also in the upper face of the lower section. These projections and grooves extend from end to end of each section. The conn struction just described, however, forms no part of the invention and may, therefore, be varied as to specific construction, if desired.

Our invention consists in providing the grooves E of the middle and lower section each with a longitudinal and preferably central slot G, which is very narrow, as shown, in which groove a guiding, supporting, and stopping staple H fits and freely slides as the several sections are being moved back and forth. Extending transversely across the ends of these slots G are the stop pins or rods J, with which the opposite ends of the staples H engage, for the purpose of limiting the movement of the several sections when moved in either direction. These stop-pins, extending across the ends of the sections, having grooves prevent the said sections from warping by resisting this tendency, as theyiit the holes made therefor tightly. The staples H are made of flat metal and provided with one or more pointed projections to be driven into the sections having T or other suitably shaped projections. These staples are made of a length to suit the length of the section to which they are applied, and in each instance are made sufficiently long to give strength to the sliding sections, and an added support for them when they are extended and which will also prevent the annoying trouble so common in extension-tables of binding when they are being closed. The guiding and limiting staples H make an exceedingly-cheap device, which can be quickly driven into place, and owing to the projections being straightat their outer edges they arenot forced out of the Wood into which they are driven by the blow received when stopped by the cross-pins J.

By means of the above-described construction we produce asimple, cheap, and very effective means for guiding and stopping the several sections in their Ymovements and at the same time adding strength and support thereto when extended, and which resists the tendency of the grooved sections to warp.

While we have described the section A as an upper section and the section B as a lower section, it will be understood that these positions may bereversed--that is, the section A placed at the bottom-without departing from the spirit of our invention. So, also, the additional narrow longitudinal groove G may be made in the projections D instead of in IOO tions to be driven or inserted into the said section, and transverse stopping-pins which extend across the said guiding-groove at its ends and entirely through the end of the section, for the purpose set forth, substantially as shown and described.

In testimony whereof We aflix onrsignatnres in presence of two Witnesses.

BURR BAIRD. THOMAS O. JOHNSON.

Witnesses:

Ron EMERSON, JACOB R. DAvms. 

